That was the sole purpose of the Blue Purgators, a task they willingly accepted and warmly supported.

For months, William kept moving from one lower realm to another, sparking a huge rebuilding process, making sure everything went smoothly as he planned.

At some point, he would stop and return to his world to check upon his friends, girls, and guild masters in training. They were all absorbed in training and looked almost like reclusive masters he had seen in his previous lifetime.

The Blue Purgators' way was simple; using the special environment he provided, they taught all the masters one unified and basic training manual. It wasn't that great or remarkable, yet it had a single advantage.

Training on this manual would ensure raising one's spirit power by one grade. It wasn't enough to get someone from one grade to another, but it was with no equal when the spirit master needed to raise his spirit power in one grade.

William didn't object to using this method, despite it would take much longer than expected, and wasn't tailored for special spirits and spirit elements that many had. He knew using this method would ensure all the masters would raise their spirit power regardless of their differences.

There was no time for the Blue Purgators to test everyone individually and tailor training manuals and programs for them. This was William's task, his guild faction leaders and friends' task. And he intended to do it once they ascended.

William kept checking on them as this method would take them to the border of the dark gold grade, but it wasn't enough to make them take the final leap. To do so, he spoke with the Blue Purgators, and they provided a solution.

"We'll brute force their spirit power using the high concentration of spirit power here," the leader explained. He intended to use the help of spirit concentration arrays and formations, ending up letting the masters absorb tons of refined spirit power and make the breakthrough.

If it failed, then the next method would be to put them in deadly fights against their masters. Yet the leader didn't believe many would face this obstacle, as William's guild masters, who were all special without exception, were undergoing the training.

He spent the next six months moving between different lower realms and his. Sometimes, he would take a few days to roam his world. The scale of construction after the great apocalypse passed was unprecedented.

Comparing his world with others who got hit with the apocalypse showed how his impact was way bigger than he even imagined. If the survivors in any lower realm world were in millions, the number was in hundreds of millions in his world.

After all forces, kingdoms, and the empire joined his new regime, the world started to rebuild itself based on this concept. There were no distant cities or towns, there were no borders lining kingdoms and even academies or clans. All lived in harmony and peace, focusing mainly and solely on repairing the damage.

Seeing this made him smile from time to time. It was his utmost desire to save more humans and masters from the gnawing jaws of the apocalypse. And seeing all this made him realise he did a good job.

After six months, William was finally done with all his tasks. The lower realms were now minor mirrors of how things looked back in his world. There wasn't a separate force, no kingdom, or individual clans or academies. All masters and humans lived under the same big banner; his.

"Are you sure this method will work?" Once he returned back to the secluded place of his elite guild masters' training, he spoke with the leader of the Purgators about his plans.

William knew his friends were now close to reaching the bottleneck, alongside many others. There was still a decent number of masters midway, and many more new ones joining after his long journey around the lower worlds.

William wasn't just overseeing the construction; he kept testing the elite masters and picked the right ones to join the training camp. He tasked a few of the Purgators' masters on his side to direct the selected ones back to his world. And that made the initial big numbers grow tenfold in the past months.

The area he prepared earlier was massive, luckily, or else trying to support all of them in one place would have been an impossible task even for the Purgators.

After coming here, he started asking for a certain set of materials. He asked for lots of explosive ores, fire-based herbs, and even explosives. Seeing what he wanted made the Blue Purgators' elders and leader stupefied, asking about what he planned to do with all of that.

"I'll simply ignite a fiery spirit power well," William shrugged, as if he was saying something simple, "using it, the spirit power will ignite and become very volatile, suitable to put huge pressure on everyone to force them through the last hurdle."

The moment every one of the seasoned masters heard what he intended to do, they exchanged silent and troubled gazes. They knew of these crude methods from old tales about fallen human powerhouses in the long past. And yet there was a catch.

"Even if it's a one hundred percent way to do it, and even if the right method to do something like that is missed from the upper realm, there is still a grave risk of burning and killing the weak-willed masters under the berserk spirit fire. Are you sure…"

"Don't look down on my guild masters," William said straightforwardly to the elder who tried to bring reason to the table, "they aren't weak-willed and won't budge under the pressure or even crack. Their spirits are special, their spirit elements are special, they are special. And I'm confident in every single one of them."

His confidence wasn't groundless. William knew all of the elite masters standing here joined him at some point, went through hectic wars he lived through and ended up experiencing lots of stuff that hardened their resolve and will.

They weren't greenhorns, yet there were others who were.